bacteria + archaea Flashcards

1
Q

what kind of bonds does archaea have?

A

ether bonds

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2
Q

what kind of bonds do bacteria have?

A

esther bonds

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3
Q

which one shares features with eukaryotes?

A

archaea

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4
Q

domain archaea have what kind of lipids

A

unique membranes

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5
Q

how many phyla do bacteria have?

A

roughly 50

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6
Q

which bacteria or archaea prefers moderate conditions?

A

bacteria

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7
Q

do archaea prefer moderate or harsh conditions?

A

harsh conditions

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8
Q

metabolic features of bacteria are only….

A

half understood

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9
Q

extremophiles

A

can only survive in harsh conditions

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10
Q

horizontal gene transfer

A

movement of one gene to another to increase diversity

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11
Q

cyanobacteria display the most….

A

diversity

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12
Q

what are cyano bacteria necessary in?

A

prodution of organic carbon and nitrogen and oxygen fixing

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13
Q

how many prokaryotic genes have been involved in horizontal gene transfer?

A

80%

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14
Q

what are the similar characteristics of bacteria and archaea

A

small size, rapid growth, and simple cell structure

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15
Q

what is the thykaloid?

A

ingrowths of plasma membranes

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16
Q

what does the thykaloid do?

A

increase surface area for photosynthesis

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17
Q

magnetosomes

A

magnetic crystals that can locate low oxygen habitats

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18
Q

cellular structures can do

A

all sorts of things, like adjust buyoancy

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19
Q

cocci

A

sphere

20
Q

rods

A

bacilli

21
Q

comma

A

vibrios

22
Q

spiral flexible

A

spirochetes

23
Q

spiral rigid

A

spirilli

24
Q

slimy muciliage

A

secreted from cells

25
Q

what is the slimy muciliage also called?

A

the cell wall

26
Q

what are the functions of the slimy muciliage

A

helps evade and hold the colony together

27
Q

cell walls are usually

A

rigid because it helps maintain shape and defense

28
Q

most archaea use what for cell walls

A

peptides

29
Q

most bacteria use what for their cell walls

A

carbs, usually (they can use peptides)

30
Q

Gram negative:

A

less peptidoglycan, lose purple strain, resists penicillin

31
Q

gram positive

A

relatively thicker layer, has purple stain, vulnerable to penicillin

32
Q

Motility:

A

allows cells to move to favorable conditions by following chemical signals

33
Q

Flagella

A

swimming outward motor, cells can have mutiple in different locations

34
Q

Pilli

A

Twitch/glide, threadlike structures on cells, used for reproduction

35
Q

Binary Fission is

A

asexual

36
Q

conjugation is

A

sexial

37
Q

autotrophs

A

produce their own organic compounds

38
Q

heterotrophs

A

organisms that need to eat for organic compounds

39
Q

Obligate aerobes

A

need oxygen

40
Q

obligate anerobes

A

can’t tolerate oxygen

41
Q

aerotolerant anaerobes

A

don’t use oxygen but not poisoned by it

42
Q

facualtive aerobes

A

can use both

43
Q

Carbon Cycle:

A

autotrophs synthesize organic compounds and then are eaten as food

44
Q

Symbiosis

A

an organism that lives in close association with organisms

45
Q

pathogen

A

parasitic microbe that causes disease symptoms